Beta Williamson County, TX only — data and coverage are limited during early access.

18109 WHITEWATER CV, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath2,898 sqftBuilt 1997

Property at a Glance

This home is estimated between $659,157 and $994,640, with a best estimate of $754,471. That places the property above the R292598D - Stone Canyon - Weekley & Newmark median of $523,036, in a neighborhood that declined 5.2% over the past year.

Estimated Value Range

$659,157 $994,640
Best Estimate
$754,471
WCAD Value
$592,620
High Confidence

Based on 5 comparable properties(5 in the same subdivision)

Based on 5 comparable properties in R292598D - Stone Canyon - Weekley & Newmark, this home's estimated market value is between $659,157 and $994,640. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

18113 WHITEWATER CV, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,850 sqft Built 1999
Raw Value $644,795
Adjusted Value $992,264

Adjusted +$349,660 for 1,048 sqft more living space and -$2,191 for being older. Net adjustment: +$347,469.

18105 WHITEWATER CV, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,973 sqft Built 1997
Raw Value $686,018
Adjusted Value $994,640

Adjusted +$308,622 for 925 sqft more living space. Net adjustment: +$308,622.

18117 WHITEWATER CV, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,459 sqft Built 1999
Raw Value $514,878
Adjusted Value $659,157

Adjusted +$146,470 for 439 sqft more living space and -$2,191 for being older. Net adjustment: +$144,279.

18101 WHITEWATER CV, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 3 bath 2,453 sqft Built 1999
Raw Value $515,385
Adjusted Value $661,666

Adjusted +$148,472 for 445 sqft more living space and -$2,191 for being older. Net adjustment: +$146,281.

18112 WHITEWATER CV, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,926 sqft Built 1996
Raw Value $429,073
Adjusted Value $754,471

Adjusted +$324,303 for 972 sqft more living space and +$1,095 for being newer. Net adjustment: +$325,398.

The Neighborhood

This home is valued 13.3% above the R292598D - Stone Canyon - Weekley & Newmark median of $523,036. With 952 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 5.2% over the past year.

R292598D - Stone Canyon - Weekley & Newmark

typical
952 Properties
$523,036 Median Value
-5.2% YoY Change
1% Have Pool
99% Have Garage
This Home
$592,620
Median
$523,036

This home is +13.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,118 across all districts. With a homestead exemption claimed, that drops to $8,758 — saving $1,360 per year. That's $730 per month a buyer should budget. The assessed value increased roughly in line with the neighborhood, so a tax protest is unlikely to yield significant savings.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$5,293
Williamson CountyCounty0.3694%$2,189
Fern Bluff MUDMUD0.1800%$1,067
Austin Community Collegespecial0.1034%$613
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$593
Williamson County FM/RdCounty0.0443%$263
Upper Brushy Creek WCIDWater0.0170%$101
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7073%$10,118

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $754,471 would pay approximately $4,709 per month (principal and interest only, excluding taxes and insurance).

Data sourced from Williamson County Appraisal District (WCAD), Texas Education Agency (TEA), and Federal Reserve Economic Data (FRED). Assessment values reflect the appraisal district's estimate, not market sale prices. Report generated 4/18/2026.

View full property details